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package environs_test
import (
"io/ioutil"
. "launchpad.net/gocheck"
"launchpad.net/juju/go/environs"
_ "launchpad.net/juju/go/environs/dummy"
"os"
"path/filepath"
)
type configTest struct {
env string
check func(c *C, es *environs.Environs)
}
var configTests = []struct {
env string
err string
check func(c *C, es *environs.Environs)
}{
{"'",
"YAML error:.*",
nil,
}, {`
default: unknown
environments:
only:
type: unknown
`, `default environment .* does not exist`,
nil,
}, {`
environments:
only:
`,
`environment .* does not have attributes`,
nil,
}, {`
environments:
only:
foo: bar
`,
`environment .* has no type`,
nil,
}, {`
environments:
only:
type: dummy
`, `.*zookeeper: expected false, got nothing`,
nil,
}, {`
environments:
only:
type: unknown
other: anything
zookeeper: false
`,
"",
func(c *C, es *environs.Environs) {
e, err := es.Open("")
c.Assert(e, IsNil)
c.Assert(err, NotNil)
c.Assert(err.Error(), Equals, `environment "only" has an unknown provider type: "unknown"`)
},
},
// should this fail or not?
// // one known environment, no defaults, bad attribute -> parse error
// {`
//environments:
// only:
// type: dummy
// badattr: anything
// zookeeper: false
//`, nil,
// },
// one known environment, no defaults -> parse ok, instantiate ok
{`
environments:
only:
type: dummy
zookeeper: false
`, "", func(c *C, es *environs.Environs) {
e, err := es.Open("")
c.Assert(err, IsNil)
checkEnvironName(c, e, "only")
},
},
// several environments, no defaults -> parse ok, instantiate maybe error
{`
environments:
one:
type: dummy
zookeeper: false
two:
type: dummy
zookeeper: false
`, "", func(c *C, es *environs.Environs) {
e, err := es.Open("")
c.Assert(err, NotNil)
e, err = es.Open("one")
c.Assert(err, IsNil)
checkEnvironName(c, e, "one")
},
},
// several environments, default -> parse ok, instantiate ok
{`
default:
two
environments:
one:
type: dummy
zookeeper: false
two:
type: dummy
zookeeper: false
`, "", func(c *C, es *environs.Environs) {
e, err := es.Open("")
c.Assert(err, IsNil)
checkEnvironName(c, e, "two")
},
},
}
// checkEnvironName checks that a new instance started
// by the given Environ has an id starting with name,
// which implies that it is the expected environment.
func checkEnvironName(c *C, e environs.Environ, name string) {
i0, err := e.StartInstance(0, nil)
c.Assert(err, IsNil)
c.Assert(i0, NotNil)
c.Assert(i0.Id(), Matches, name+".*")
}
func (suite) TestConfig(c *C) {
for i, t := range configTests {
c.Logf("running test %v", i)
es, err := environs.ReadEnvironsBytes([]byte(t.env))
if t.err != "" {
c.Check(err, ErrorMatches, t.err)
} else {
c.Assert(es, NotNil)
c.Assert(err, IsNil)
t.check(c, es)
}
}
}
func (suite) TestConfigFile(c *C) {
d := c.MkDir()
err := os.Mkdir(filepath.Join(d, ".juju"), 0777)
c.Assert(err, IsNil)
path := filepath.Join(d, ".juju", "environments.yaml")
env := `
environments:
only:
type: dummy
zookeeper: false
`
err = ioutil.WriteFile(path, []byte(env), 0666)
c.Assert(err, IsNil)
// test reading from a named file
es, err := environs.ReadEnvirons(path)
c.Assert(err, IsNil)
e, err := es.Open("")
c.Assert(err, IsNil)
checkEnvironName(c, e, "only")
// test reading from the default environments.yaml file.
h := os.Getenv("HOME")
os.Setenv("HOME", d)
es, err = environs.ReadEnvirons("")
c.Assert(err, IsNil)
e, err = es.Open("")
c.Assert(err, IsNil)
checkEnvironName(c, e, "only")
// reset $HOME just in case something else relies on it.
os.Setenv("HOME", h)
}
|